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Financial risk management - Gains and Losses in OCI from Financial Instruments (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Derivative instruments release period	12 months
Accumulated other comprehensive income, gain (loss) on financial instruments, net of taxes	€ 21.7	€ (7.6)	€ 7.6
Purchase transactions
Derivative [Line Items]
Purchase and sales transactions	25.6	(8.9)	5.5
Accumulated other comprehensive income, gain (loss) on financial instruments, net of taxes	21.7	(7.6)	4.7
Sales transactions
Derivative [Line Items]
Purchase and sales transactions	0.0	0.0	3.4
Accumulated other comprehensive income, gain (loss) on financial instruments, net of taxes	€ 0.0	€ 0.0	€ 2.9

X

- Definition

Accumulated Other Comprehensive Income (Loss), Cumulative Changes In Net Gain (Loss) From Cash Flow Hedge Effect, Before Tax

+ References

No definition available.

+ Details

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- Definition

Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-11

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- Definition

Estimated period for the anticipated transfer of gain (loss), net, from accumulated other comprehensive income into earnings, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

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